I used the P21 Carnauba wax recently and its a great finishing wax...car is newer and paint in good shape.
Years ans years ago, I detailed cars and while plenty of new products have come out (I use Griot and one Chemical guys protect) One I continually go back to as a "cleaner" wax is 3M. (they own Meguiers for those that didn't know)
Works better on slightly older cars, but does fantastic job on swirls marks, blemishes and acid rain. They also have a machine wax if prefer, but twice/3 times a year, I use this on flat spots (can do back and forth and not circular) and finish with P21 or finish wax. (dont have too, but makes finish a bit nicer)Takes minutes and looks almost as good as others more advance/time consuming processes. Works great on softer paints - Their Hand glaze is good too, but prefer P21
https://www.amazon.com/3M-39006-Auto...0002NUNCK?th=1